On the other side of the head, I've included a picture comparing a 426 Street Hemi and a typical oval port big block. Note that Chevy valves are not aligned like a small block, but instead are ...

Hemi is Chrysler, and Chrysler is Hemi... or is it? You're probably aware that Ford got in on the Hemi fun, but did you know ...

The flow numbers for the BGE 392 Hemi cylinder heads are nothing to sneeze at; this is well into big-block Chevy race head territory and easily equals a CNC-ported LS3 cylinder head, but without ...

Ask a big-block enthusiast what they need to make 600 hp and chances are they will point to some sort of rectangular-port head. No one in their right mind would select an oval-port head to make ...

Chevy Big Block Cylinder Heads PCV valves - Proper Breathing Techniques. The Good, The Bad, And The Ugly Of Big-Block Chevy Heads. HOT ROD Staff Writer Aug 17, 2009. See All 6 Photos.

Big Block Chevy VS 426 Hemi . For those of you who aren't familiar, Tony ... While Uncle Tony doesn't get into the heads in this clip, he has covered the Ball Stud Hemi in a prior video, ...

While the understandable culprit for the death of big block engines is largely attributed to the Oil Crisis, it's not the ...

Seeking more horsepower and speed, Mopar engineers applied Chrysler's hemispherical cylinder-head technology, developed in the 1950s, to the Wedge's 426-cubic-inch big block, creating a 426 Hemi ...

Equipped with a hydraulic roller camshaft just like the HT502, this member of the big-block family uses rectangular-port heads and runs the same 8.75:1 compression ratio as the aforementioned 502 ...